Phonoautograph
Phonoautogram
Phonautogram
Phonautograph
-1
Section::::Abstract.
Phonautograph
540641
Phonautograph
-1
Section::::Early history.:Predecessors to the phonograph.

Phonograph
24471
Oldest recorded music
Phonautograms
phonautogram
phonoautogram
oldest recorded music
phonautograms
phonautograph
phonoautograph